DMD 1.027 and 2.011 releases

[Walter Bright]

Graham St Jack wrote:
> It is also very helpful when writing code to know that a function you are 
> calling won't throw an exception - it means you have three kinds of 
> functions: those that don't throw, those with comments telling you what 
> they throw, and those that you need to fix the comments for.

Experience with this indicates that it is impractical to specify what 
exceptions a function may throw. The only practical states to specify are:

1) does not throw
2) always throws
3) might throw

What is thrown is not reliably computable. For example:

import foo;
void test()
{
     foo.bar();
}

What exceptions does test() throw? That would require knowledge of the 
import foo, which is not necessarily knowable and can change over time.